Tire-core.



MINSEL BRACEY, OF THOMASVILLE, GEORGIA.

TIRE-CORE.

i ,i/ionaa.

. specification of Lettersratnt.

Application led November 4, 1913. Serial No. 799,208.

T0' all whom t may concern:

Be it lmown that l, MONSEL BRACEY, a citizenfof the United States, residing at Thomasville, in the county of Thomas and State of Georgia, have invented new and' useful Improvements in Tire- Cores, of which the following is a specication.

'This invention relates to cores or fillers for the air tubes on pneumatic tires, theobject of the invention being to provide a core of rubber of other suitable material adapted to be inserted kwithin the air containing tube or casing of a tire and to be employed as a cushioning medium in place of air, whereby -the disabling of tires from punctures, blow-outs and other similar injuries will be avoided.'4

A further object of the invention is to provide a core or filler of the character set forth which will aord ample resiliency in all directions; which is comparatively light in weight so that it will not render the tire cumbersome or unduly heavy, and which is constructed in a novel manner to secure strength, durability and ample resiliency.

The invention consists of the features of construction, combination and arrangement lof parts herein fully described and claimed,

reference being had to the accompanying drawing in which Figure l is a top plan view of a fragment of a core or filler embodying my invention.

Fig. 2 is a bottom plan, view of the same. Fig. 3 is a vertical transverse section through the filler. Fig. 4 is a longitudinal section thereof.

`The filler l, which is made of a rubbercomposition, or any similar material posf sessing a necessary degree of resiliency, is

vcircular in cross section and of a proper di ameter and length to snugly fit within and extend'around the interior of an inner tube orl casing of any determined dimensions. The tube will thus inclose the filler and form a casing therefor, whereby the filler is retained in position within the outer tube or shoe. f

- rihe inner portion or rim side of theller is substantiallysolid, as shown at 2, but 'may be provided with a series of longitudinal openings 3 to secure greater likeness and flexibility if desired. From this portion 2 to the remainder of the periphery ofthe filler, the liller is of a cellular structure, being provided with a series of tapered or conical cells or pockets ,fwhich extend in wardly toward the side 2 from the tread" surface and s ides proper of the tire, produclng. intervening elastic webs 5. I The said pockets or cells l communicate at their outer ends with openings 6 formed in the periph- V ery of the liller, and said cells and openings are arranged in preferably staggered'rows throughout the 'circumferential lengthy of the filler, the pockets and opening of each Patented nay is, i915.

row alternating in arrangement with the.

pockets and openings of the adjacent rows, both longitudinally and transverse of the iller`, thereby enabling a maximum number pf cells orl pockets andQ openings to be formed without unduly weakening the body of the'ller and connecting webs.

" It will be observed from the foregoingdescription, and by particular reference to Fig. 3 of the drawing, 4that the cells and webs taper inwardly and extend outwardly on relatively diver-ging lines in a fanshaped arrangement, whereby the tread portion of the filler is given maximum resiliency,'which diminishes gradually and progressively as such tread portion is compressed toward the side 2, thusenabling a maximum cushioning action to be obtained, while at the same time avoiding undue resiliency and lateral distension .of the filler and liability of rupture of' the connecting webs. Such construction also permits of an ample degree of-lateral resiliency of the filler foil a cushioning action when side pressure falls upon the tire,

It will. be vunderstood that the cells or pockets, in addition to lightening the filler and imparting thereto a determined range of liexibility and resiliency, also serve as receptacles for a certain amount of air under natural and atmospheric pressure, which. enters and leaves the pockets through the 'openings 6 and is adapted to'be c ompressed within the pockets when the filler is under compressionV ,to give an added cushioning resiliency.

It will, of course, be understood that the filler when used in connection with an inner ,tube may be inserted in any suitable manner, and will take the place of the usual cushioning body of compressed air, but will a'ord' a cushioning backing from the tire which overcomes and-avoids 'all liability of serious damage to the tires from punotures, 'blowouts and other injuries, while at the same time giving to the tire all of the necessary life or resiliency to secure an eliicien't ioo iio'

cushioning elect.v The ller may be also employed in the place of an inner tube and without the latter as a lcore within an ordinary outer .tube or shoe.

I claim v As a new and improved `article of manufacture, a tire core filler comprising a body of resilient material of substantially circular form in cross section, said body being provided at its base portion with a transverse arcuate row of longitudinally extending curved passages, the remainder of thebody being formed with transverse rows of radial cells opening through and toward the tread surface and sides thereof, the cells of each row radiating from an arcuate line concentric with said row of passages in fanlike arrangement, said cells being of conical form and Haring in an 4outward direction, the cells of each transverse row being arranged on lines between -the cells of adja cent rows.

n testimony whereof I alx' my signature 

